/Engine/Source/Editor/SubobjectEditor/Public/SSubobjectEditor.h
[FReply](API\Runtime\SlateCore\Input\FReply) HandleOnAcceptDrop ( const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) & DragDropEvent, EItemDropZone DropZone, FSubobjectEditorTreeNodePtrType TargetItem )